Answer
Two chiral carbon atoms are present in this molecule.
Work Step by Step
A chiral carbon has four different groups or atoms attached to it. This molecule has two chiral carbon atoms present. The second carbon from the right has $-CH_{3}$, $-H$, $-C_{2}$$H_{5}$, $NH_{2}$-$C$-$COOH$. Also third carbon from the right has -$H$, $-NH_{2}$, $COOH$ and $-CH$$(CH_{3})$$(C_{2}H_{5}$).